I bought Ernie a larger enclosure yesterday and this time I used a very fine sand for the bottom, he has been in a smaller enclosure with carpet bottom.....problem, he now will not eat anything, for two days now, he does check out his new home and digs in the sand but doesn't seem to feel comfortable or safe in it.......is this common for them to not eat when placed in a new enclosure?.....and how long before he will start to eat again?